Dish-washing machine.



C. L. LILLEBERG.

DISH WASHING MACHINE.

APPLICATION FILED mam, 1913.

1,080,704. Patented Dec. 9, 1913.

3 SHEETS-SHEET l.

3 SHBETSS BET 3.

Patented Dec. 9, 1913.

, C. L. LILLEBERG.

DISH WASHING MACHINE.

APPLICATION FILED MAR.24, 1913.

' neaflea' CHARLES L. LILLEBERG, or CHICAGO, ILLINOIS.

DISH-WASHING MACHINE.

Specification of Letters Patent.

Patented Dec. 9, 1913.

Application filed March 24, 1913. Serial No. 756,620.

To all whom it may concern:

Be it known that I, CHARLES L. L nna- BERG, a citizen of the United States, residing at Chicago, in the county of Cook and State of Illinois, have invented a certain new and useful Improvement in Dish-Washing Machines, of which the following s a full, clear, concise, and exact description, reference being had to the accompanying drawings, forming a part of this specification.

My invention relates to dish washing machines and has a number of objects and advantages in view.

My invention has for one of its ob e cts the provision of a dish washing machine employing dish holding racks within a cabinet, spacing intervening between the cabinet and dish holding racks whereby water sprayed toward the dishes and passing the same will impinge upon the cabinet and rebound toward the dishes to wash the back portions thereof.

My invention has for another of its objects the provision of a traveling water spray whereby the force of the water may be concentrated upon the dishes in succession and whereby clean water last operates upon the dishes being cleaned. In practising this feature of my invention the spray is desirably caused to travel in a vertical or upright direction and the tubing or piping by which the water is conveyed to the spray head preferably includes telescoping seetions that constitute a portion of the spray head support and which telescoping sections operate to increase the pressure exerted upon the water as the spraying device returns to its upper position.

My invention has other objects and advantages and the invention will be explained more fully by reference to the accompanying drawings showing the preferred embodiment thereof and in which Figure 1 is a front sectional elevation; Fig. 2 is a side sectional elevation of the structure shown in Fig. 1; Fi 3 is a sectional plan view on line 3--3 0 Fig. 1; Fig. 4 is a plan view illustrating a detail of construct-ion; Fig. 5 is a sectional view on line 5-5 of Fig. 4; Fig. 6 is a detail plan view; Fig. 7 is a side view, partially in section, showing a detail of construction; Fig. 8 is a sectional view on line 8-8 of Fig. 7; Fig. 9 is a side view, with parts broken away, showing a detail of construction; and

Fig. 10 is a sectional view on line 10-10 of Fig. 9.

Like parts are indicated by similar characters of reference throughout the different figures.

The machine, according to the embodiment of the invention shown, employs a cabinet having three vertical side walls 1, a front wall 2, provided with a door opening having a door 3, a top 4, and a-funnel shaped bottom 5, though obviously the shape of the cabinet need not be restricted to that illustrated. The door 3 may be provided with glass so that the operation of the machine may be viewed while the door is closed. Pipes 6 and 7 are provided for connection with hot and cold water service pipes, pipe 6, for example, conveying cold, and in which case pipe 7 will convey the hot water. These two pipes are connected by a pipe 8 that has T-joint connection with a stand pipe 9. Valves 10 and 11 are located upon opposite sides of the pipe 9 in the pipe 8. The pipes 6, 7, 8 and 9 are desirably located at the rear of the cabinet, in which case the handles 12 and 13 for operating the valves 10 and 11 are provided with elongated shanks 14 and 15 which connect the handles with the stems of said valves. By suitable manipulation of the handles hot water or cold water may alone be caused to flow through the pipe 9 or suitably tempered water may be caused to flow through this pipe. A U-connection 16 unites the upper ends of the pipe 9 and a pipe 17. A pipe 18 is within the stationary pipe 17 and may be moved up and down therein. A pipe 19 is within the pipe 18 and may move up and down therein. A pipe 20 is within the pipe 19 and may move up and down therein. The pipes 17, 18 and 19 carry lugs or shoulders 21 near their lower ends and the pipes 18, 19 and 20 carry lugs or shoulders 22 near their upper ends. These lugs or shoulders are desirably in the form of flanges so as to prevent the improper passage of water. The pipes 17 18, 19 and 20 are thus in telescoping engagement, the flange 21 upon each of the pipes 17, 18 and 19 serving to limit the downward movement of the pipes 18, 19 and 20 when the flanges 22 upon the upper ends of the latter pipes engage said shoulders 21. Packing devices 23 are mounted upon the lower ends of the pipes 17, 18 and 19 to engage the pipes 18, 19 and 20 to prevent leakage between the pipe sections. These packing devices 23 have bottom outsetting flanges 24 to limit the extent to which the movable pipes may ascend. The inner pipe 20 is in communication with the middle portion of a transverse pipe 25. which is connected at its ends with forwardly and rearwardly extending pipes 26. Thus the pipes 6 and 7 are connected with the pipes 26 by means of an extensible piping desirably including the pipe elements 17, 18, 19 and 20 but to which elements the invention is not to be limited. The construction described, however, is preferred since the space occupied is predetermined and since the telescoping pipes afford a guide to define the "ertical movement of the pipes 25 and 26. To prevent the pipes 25 and 26 from turning their elbowscarry rods 27 whose outer ends pass through slots in vertical guiding tubes 28, the end portions of the rod 27 that are within the pipes 28 being lar er than the slots in these pipes through w ich the rods 27 pass to prevent the withdrawal of the rods.

The pipes 25 and 26 are plentifully provided with perforations along the sides thereof that face the sides of the cabinet, these perforations being staggered and preferably being one-thirty-second of an inch in diameter each. The forward ends of the pipes 26 are closed. By this arrangement the water finding passage from the pipe section 20 into the piping 25 and 26 is forced from the piping 25, 26 toward the sides of the cabinet. In order that the water sprays may be directed toward different vertical portions of the cabinet mechanism is provided for raising and lowering the piping 25 and 26, the extensible and contractible pipes 17, 18, 19 and 20 permitting of this motion. The pipe section 25 is connected with one end of a wire chain 29 that is engaged by a sprocket wheel 30 upon a shaft 31 which projects forwardly through the upper portion of the front wall 2 of the cabinet, the front end of the shaft 31 carrying a crank 32 in fixed relation therewith, the outer end of this crank having a pin 33 surrounded by a handle 34 that turns upon this pin. By turning the handle 34 the shaft 31 is turned whereby the chain 29 is caused to pass over the wheel 30 in one direction or the other according to the direction of rotation of the shaft 31 whereby the piping 25 and 26 is either pulled upwardly or permitted to lower, this piping in lowering being influenced by gravity sup plemented by the downward pressure of the water. The piping 25 and 26 is preferably horizontally disposed, thereby being transversely arranged with respect to the line of its bodily travel. A pocket 35 is employed for receiving the chain 29 that drops from the left hand side of the sprocket wheel 30 whereby this chain is prevented from dangling in the way. The bottorn of this pocket 15 perforated so that water may not accumulate therein. The T- oint uniting the pipe 25 with the pipe 20 is provided-with a very small perforation, one-thirty-second of an inch in diameter, as indicated in Fig. 8 to prevent the water from remaining in the piping 25, 26.

In order to maintain the piping 25, 26 at any selected level against the action of gravity and water pressure, a retaining device may be employed that preferably includes a toothed ring 36, which may also act as a bearing for the outer end-of the shaft 31, anda cooperating holding pawl 37 mounted upon the crank structure 32 and spring pressed toward the toothed ring 36 by a coil spring 38. The holdin pawl 37 has an extension through which t e in 33 freely passes and as a handle 34 is reely mounted upon the pin 33 this handle may be pressed against said holding pawl extension to turn it against the force of the spring 38 for the purpose of withdrawing the pawl from engagement with the toothe wheel 36 whereupon the shaft 31 may be turned. When the shaft 31 is to be brought to rest to maintain the piping 25, 26 at any desired level, the handle 34 is merely released whereupon the 5 ring 38 becomes effective to press the holcing pawl 37 into engagement with an adjacent tooth upon the ring 36. In this operation the released handle 34 is thrust outwardly to the position shown in Fig. 9 so that this handle is free to be pressed inwardly when the holding pawl 37 is next to be disengaged from the ring 36. To limit the extent to which the sh-a t 31 may be turned in either direction I provide a bar 39 pivotally mounted at one end upon the cabinet structure and carrying a tooth 40 at its other end, this tooth being in engagement with a threaded enlargement 41 of the shaft 31 so that the bar39 is swung toward or from the front of the cabinet according to the direction of rotation of the shaft 31. The bar 39 carries a stop lug 42 and the threaded portion 41 of the shaft 31 carries stop lugs 43, 44, the stop lug 43 engaging the stop lug 42 to limit the extent to which the shaft 31 may be turned to the left, when the piping 25, 26 is in its uppermost position. while the lug 44 engages the lug 42 to limit the extent to which the shaft 31 may be turned to the right, when the piping 25, 26 is in its lowermost position.

By the construction which has been described strong sprays of water find passage through the perforations in the pipin 25, 26 against the back and side walls 0% the cabinet. A holding structure for dishes, cups, glasses, table ware and other suitable rticles to be washed is interposed between 25, 26 and the sides of the cabinet facing this piping. This holding structure may be of any suitable construction and preferably includes racks formed of wire elements 45, these wire elements being anchored in brackets 46 at the front of the cabinet and in mounting plates 47 at the rear of the cabinet. These mounting plates 47 are in turn mounted upon vertical mounting strips 48, the mounting strips 48 being each secured to abracket 49 at each of the ends and middle of the mounting strip 48. The brackets 49 are each mounted at one end upon the cabinet and support the guides 28 at their inner ends in addition to supporting the plates 47. The racks supportmg the pieces to be washed are of such a nature as to afford no material obstruction to the Water spray issuing from the piping 25, 26 and the racks are variously shaped so as to be adapted to the proper support of the different pieces, some being suitable to the support of glasses, others to the support of cups, others to the support of plates, and others to the support of pitchers. Some of the racks may be equipped with inwardly projectin fingers 50 for the support of s oons, (IllVCS, and forks. The dishes, g asses, cups, etc., are so inclined in the racks adapted to their support that the sprayed water will not remain therein but will fall therefrom after it has performed its function.

In the dish washing operation the racks are loaded with the pieces to be washed, the piping 25, 26 having been drawn to its uppermost position to ermit of free access to the racks and in or er that the dish washing operation may be started at the top of the cabinet. Cold water is first solely directed through the perforations in the piping 25, 26 and this piping is lowered by the mechanism which has been described as the cold water issues therefrom. The water which has cleaning action upon each row of pieces to be washed falls upon the pieces that may be below so as to have washing action upon these pieces, but the water which last has contact with the pieces being washed is not that which falls from other pieces but is that which is freshly received from the piping 25, 26. After the piping 25, 26 has made its journey to the bottom of the cabinet it is caused to return and in returning the city water pressure is reinforced by the pressure upon the water occasioned by the piston and cylinder act-ion of the pipe sections 17, 18, 19 and 20 whereb some of the particles which were not dislo ged as a consequence of the spra issuing under the force of city pressure uring the downward movement of the piping 25, 26, are displaced on the return movement of this piping when the premure upon the spray is reinforced in the manner described. When the dishes the piping have been subject to the washin action of cold water it usually happens t at a portion only of the foreign matter is removed therefrom, the foreign matter remaining thereupon, such as grease, etc., being suitably subjected to the action of cold water preparatory to the action of hot water. When the pieces to be washed have been sufliciently subjected to the action of the cold water the cold water is completely shut off and the hot water is turned on to the desired extent whereupon the traveling piping 25, 26 is again lowered and elevated to remove the remaining foreign matter from the pieces bein washed, it being understood that this traveling pipin may be moved up and down at different p aces in the cabinet as much as may be desired to secure the necessary results. It will be observed that spacing intervenes between the racks that support the pieces being washed and the walls of the cabinet that face the piping 25, 26. The portion of the spray which passes by the pieces being washed strikes the vertical walls of the cabinet and rebounds therefrom so as to impinge upon the pieces being washed that would otherwise not be reached. The funnel shaped bottom 5 for the cabinet leads the water from the cabinet so as to prevent the accumulation thereof within the cabinet. A strainer 51 is at the bottom of the funnel 5 and operates to prevent the passage from the cabinet of small articles and particles which would tend to clog the drainage pipe 52 into which the funnel shaped bottom 5 discharges. The trap 53 may be included in the formation of the pipe 52 to prevent the passage of gas into the cabinet. Owing to the preferred location of the dishes and other pieces to be washed within the cabinet such dishes and pieces are at once emptied of the water sprayed thereupon and owing to the machine of my invention the last water in contact with the pieces being washed is clean water which has not been used in the washing of any other pieces. When the dish washing operation has been completed the piping 25 and 26 is at the top of the machine and all water which has been sprayed has found its way through the funnel bottom 5 into the pipe 52 so that the interior of the cabinet is free of water excepting the thin films of water remaining upon the ieces being washed and the sides of the ca inet which is quickly evaporated. The evaporation of the films of water remaining within the cabinet is hastened owing to the heated condition of the air within the cabinet leaving the dishes dry and clean.

While I have herein shown and particularly described the preferred embodiment of my invention I do not wish to be limited to the precise details of construction and circuit arrangement shown as changes may readily be made without departing from the spirit bodily travel of the spraying device up and of my invention, but down relatively to the pieces being washed. Having thus described my invention I In witness whereof, I hereunto subscribe claim as new and desire to secure by.- Letters my name this twenty fourth day of January 5 Pzitkent tlllle foll(l 1wing: h I d A. D., 1913.

dis was in mac ine inc u ing a water spraying dev ice; a cabinet containing CHARLES LILLEBERG' the spraymg device; supporting means Witnesses: within the cabinet for holdlng the pieces to G. L. CRAGG, 10 be washed; and mechanism for effecting I E. L. WHITE. 

